Pipe joint clamp



Nov. 12, 1940.

c. c. BARTELL 86 PIPE JOINT CLAMP Filed Nov. 18, 1958 2 Sheets-Sheet? IllglZ.

INVENTOR. C/ore/x'e C 490/)? A ORNEY.

I Patented Nov. 12, 1940 UNITED STATES PATENT, OFFICE I l PIPE JOINT CLAMP Clarence Bartell, Fort Wayne, Ind., assignor to Pittsburgh Equitable Meter Company, Pittsburgh, Pa, a'cerporationl of Pennsylvania Application November 18, 1933, Serial No. 241,178

4 Claims. (Cl. 2s5 1s4) The present invention relates. to joint sealing devices or pipe clamps for pipe lines. j

Cast iron pipe, as ordinarily manufactured, although of standard inside dimensions, varies greatly in its outside dimensions, and thus two sections of a specified size of pipe may vary considerably in outside diameters. where pipes have been under ground'for a long period of time and have corroded, the size variation is still further increased, and in addition,

the outside surface becomes rough and uneven.

In order to provide a clamp for a gasket joint between such pipe sections, it is desirable that the space between the gasket clamping member 5 or follower and the pipe shall be as small as possible to prevent extrusion of the gasket therebetween.

It is an object of the present inventionto ,pro-

vide a clamping device for bell, and spigot pipe 21 joints which will form an effective sealagainst In accordance with the present invention, 1 provide a pipe clamp comprising an anchor ring,

and a follower member made up of a plurality .lfi of arcuate sections with filler pieces between the sections providing a gasket engaging face substantially continuous with the follower ring. Preferably, the filler pieces are interlocked with the follower ring sections to prevent tilting there- .m of, and have extensions adapted to receive bolts for assisting in drawing the follower member against the joint. Where desired, additionalinserts having gasket engaging facesmay be in-.

serted between the follower ringsections and the 45 filler pieces so that the clamp hasa wide range of adjustment. With this construction it is possible to adjust the size of the follower ring to accommodate the normal or abnormal variations encountered in pipe sizeswhether due to cor- 50 rosion and pipe roughness or to variation in manufacture.

The invention will be explained in detail in connection with the accompanying drawings,

wherein g5 Figure 1 is a section through the bell end of a In some cases filler piece,

Figure 11 is an end elevation of Figure 10 as pipe, showing the anchor ring applied thereto,

Figure 2 is a section through the spigot end iof a pipe, showing the joint sealing member in elevation, Figure 3 is a' section taken on line III-III of 5 Figure 2, the filler piece being partly in elevation,

Figure 4 is an elevation of an arcuate segment of the follower member on an enlarged scale,

Figure 5 is a section taken on line 'V-V of 10 Figure 4,

Figure 6 is an end viewftaken in the direction of thearrows VIVI of Figure 4,

Figure 7 is a side elevation of a filler member and dog on an enlarged scale,

Figure 8 is an end elevation, of Figure 7 as viewed from the left,

Figure 9 is a bottom elevation of Figure 7, Figure 10 is a side elevation of an auxiliary viewed from the right side, and

Figure 12 is a bottom view of Figure 10. Referring to the drawings, Figures land 3, a pipe section I is provided with a bell end 2, adapted to receive the spigot end 3 of an adjacent pipe section. The union .betweenthe bell and spigot is sealed with leador other suitable material in known manner, filling the space therein. An anchor ring, indicated generally by the numeral 4, is adapted to be secured about the flange of the bell 2, and comprises a plurality of segments which may be of any desired number. As shown in Figure 1, four segments, 4a, 4b, 40 g and 4d are employed, each segment having lugs 5at its ends which are apertured at 6 to receive a bolt 1 with a suitable mu; 8 thereon for drawing two adjacent sections together and thus firmly clamping the anchor ring about the pipe bell. Each anchor ring section preferably. is provided 40 with a cylindrical face 9 and a skirt orfiange ID, the latter being adapted to engage back of the bell flange I 2 for preventing forward movement of the anchor ring over the end thereof. If desired, the cylindrical face!) of the ring may have lugs or pads formed thereon for engaging the bell flange, this being especially desirable where the pipe surface is rough. The anchor. ring sections have lugs l I disposed at intervals about its outer periphery, these lugs being apertured at [2 5 to receive bolts l3 for a purpose presently to be described. i

: In assembly, a gasket l5 of rubber or other which engages the bell face I! of the pipe and a cylindrical face l8 which engages the surface of the spigot 3. A concave or other suitably shaped face l9 may be provided on the gasket to be engaged by a suitable follower, and, as shown, this face I9 terminates in shoulders 22 and 23 disposed'at right angles to the surfaces I6 and [8.

The follower or pressure member 24 (Figures 2 and 4) is adapted to be secured to the anchor ring by the bolts 13, as will presently appear, and is held in position by nuts 25 thereon to press the gasket i5 into the joint between the bell and' spigot and thus prevent leakage.

The follower member 24 is made up of s. plurality of like sections, and as shown in Figure 2, four sections are employed, designated as 2412,24b, 24c and 24d.

Any desired number of sections may be used.

' 31 have slots 33 through which passsuitable connecting bolts 34 (Figure 2) receiving the'nuts 35 thereon for holding together adjacent sections 7 of the follower ring, and the bottom flange 29 is reduced at 38 to weaken the ring section so that it may be bent, if required, to conform to the pipe. The sections preferably are made of malleable iron. Intermediate lugs 36 are connected by suitable ribs 3? to the body of the follower seg- 'ment, these lugs being perforated at 38 to receive certain of the bolts l3 chor ring; 7

Suitable combinationdog and filler pieces are provided between adjacent sections of the anchor ringto provide a continuous gasket engaging face. As'shown in detail in Figures 7 to 9, the filler portion of the dog comprises a plate 40 having a hole 52 therethrough to receive the passing through the anbolt 34 (Figure 2)Iand havin flanges l2 and43 shaped to be received in the mating recesses 32 of adjacent follower ring sections. A curved face M terminating in shoulders 55 and 46 is provided to abut the gasket i5. ,Preferably, the plate 40 has, anchor projections t? at its rear edge which are received in the recesses 58 of adjacent follow er sections, and the lugs 49 prevent upward movement thereof; Flanges or bearing shoulders '55, 52 are provided on each side of the filler piece adapted to abut on the top surface 53 of lugs 31 on the follower ring sections. The projection 41, flanges Si, 52 and bolts 34 thus prevent any substantial tilting of the filler pieces about the bolts 3d. Preferably, the filler member 40 has a vertical extension 55 and ribs 56 which integrally connect a boss 57' thereto. Boss 51 has a hole 58 therein adapted to receive certain of the bolts and raised portions 59 are provided to provide an abutment for the nuts 25 (Figure 3) received thereon.

If desired, additional filler pieces 6! and '62 (Figures 2, 10, ll. andlZ) may be provided. Filler piece 6! comprises a plate with a hole 63 therethrough and on one side has a mating recess 64 into which the flange 43 of the filler fpieces 40 is received. The other side of filler piece 6! has a flange 65 adapted to be received tween the filler piece 40 and the follower ring section on the oppositeside. A gasket engaging face 66 formed to conform generally to the gasket is provided on the filler pieces 6! and 82. Recesses 6'! are provided to accommodate the extensions 41, and the extensions 41 are of sufficient length to project beyond the filler pieces 6| and 62 and engage the lugs 49 of the follower ring sections.

In assembling the leak clamp, the anchor ring sectionsda, 4b, 4c and 4d are put in place and clamped about the spigot flange by the bolts 1 and nuts 8. The gasket l 5 is then cut to size and fitted in position about the bell joint, the ends being held together temporarily in any convenient manner. The follower ring sections 2 3a, 24b, 24c and lid are then placed about the pipe and a dog 30 is placed between adjacent sections with the extensions if received in recesses 28 and the hole M aligned with slots 33, and a bolt 3% is passed through the slots 33 in the follower ring sections and the hole M in the dogs, and the nut is applied to clamp the parts in assembled position. It will be understood that beforehand it hasbeen determined whether any additional filler pieces BI and 62 are required and when these filler pieces are required they are at the same time placed in assembled relation to the member 49 with the flange 43 received in the recesses 38 thereof before assembly so that bolts 34 may be extended therethrough. When all the follower ring sectionsare assembled and bolted together,

they provide a continuous gasket engaging face made up of the surface sections 21 of the follower rings of the dogs, and 66 of the filler pieces. The relieved portions 39 of the ring sections allow the sections to be bent at these points if necessary to make the assembled ring conform even- 1y to the pipe. Bolts I 5 are now inserted through the holes in the lugs E3 in the anchor ring and through the apertures 53 of the dogs, and through the apertures 38 in the lugs 36, and the nuts fill are turned onto draw the follower ring toward the anchor ring and compress the gasket. When the nuts 35 are drawn tight they give rigidity to the followerring so that the follower ring is drawn toward the anchor ring without tilting of the sections. Also, the interlocking between extensions M and lugs 49 prevent tilting of the dogs.

It will be understood that the invention may be embodied in other specific forms, as for example, the flanges on the inserts and recesses may be transposed, without departing from the spirit or scope thereof.

What I claim as my invention and desire to secure by Letters Patent is:

1. A pipe, joint sealing device comprising an anchor. member, a gasket for engaging the pipe joint, and a follower assembly for compressing said gasket, said follower assembly comprising a plurality of arcuate sections adapted to be secured to the anchor member, filler pieces between adjacent arcuate follower sections, means for holding said arcuate follower sections and filler pieces in assembled relation, and means for securing said filler pieces to the anchor member.

2. A pipe joint sealing device comprising an anchor member, a gasket for engaging the pipe joint, and a follower assembly for compressing said gasket, said follower assembly comprising a plurality of arcuate sections adapted to be secured to the anchor member, filler pieces between adjacent arcuate follower sections, means extending substantially parallel to a diameter of the follower for holding said arcuate follower sections and filler pieces in assembled relation '15.

and means for securing said follower assembly to the anchor member.

3. In a pipe joint sealing device, an anchor member, a gasket for engaging the pipe joint, and a follower assembly for compressing said gasket, said follower assembly comprising a plurality of arcuate sections having slotted lugs at the ends thereof, interlocking filler pieces adapted to be inserted between adjacent arcuate follower sections, a bolt passing through said lug and filler pieces to hold the anchor ring in assembled position, extensions on said filler piece and arcuate follower sections having bolt holes therein, and bolts passing through said holes adapted to secure said follower assembly to the anchor member.

4. In a pipe joint sealing device, an anchor member, a gasket for engaging the pipe joint, and a follower assembly for compressing said gasket, said follower assembly comprising a p1ube received in the recesses of adjacent arcuate follower sections, auxiliary inserts having a gasket engaging face flanged on one side and recessed on the other side, means for holding the 10 arcuate follower sections and filler piece and inserts in assembled relation, radial extensions on said filler piece and follower sections having bolt holes therein, and bolts passing through said holes adapted to secure said follower assembly 15 to the anchor member.

CLARENCE C. BAR'IELL. 

